A simulation analysis method for anti-roll torsion bar shaft upsetting process for rail vehicles

Abstract

The invention discloses a method for simulating and analyzing the upsetting process of an anti-side-rolling torsion bar shaft for a rail vehicle. Process documents, obtain the dimensional parameters and material grades involved in the three processes; establish the geometric models of bars, heating molds, ejector pins, headings, dies, and fixed molds, and complete the bar and heating according to the parameters in the process documents Assembling of moulds, dies and fixed moulds; in the molding process simulation analysis software, the simulation of the three processes of bar heating, upsetting forming, and overall cooling is carried out, and the final process parameter scheme is obtained by making a reasonable judgment after meeting the requirements . The present invention replaces the current empirical design method with a simulation analysis method, and can solve the problems of many trial production times, long production cycle and high manufacturing cost of the current upsetting process.

Description

technical field [0001] The invention relates to a production technology for upsetting and forming of an anti-roll torsion bar shaft for rail vehicles, in particular to a simulation analysis method for an upsetting process of an anti-roll torsion bar shaft for rail vehicles. Background technique [0002] The application of the air spring greatly improves the vertical vibration performance of the train vehicle, but reduces the roll angle stiffness of the vehicle body. In order to improve the anti-roll performance of vehicles, anti-roll torsion bar devices are widely used. The structural feature of the anti-roll torsion bar shaft is that the diameter of the shaft end far exceeds the diameter of the middle section. This structure is realized by the end upsetting process (a forming process that increases the diameter of the workpiece through the axial extrusion deformation of the die). The specific process As follows: the end of the bar is heated through the intermediate frequen...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the above-mentioned problems of the prior art, a simulation analysis method for the upsetting process of anti-rolling torsion bar shafts for rail vehicles is provided. The simulation analysis method replaces the current empirical design method, which can solve the current upsetting process. There are many times of rough process trial production, long production cycle and high manufacturing cost

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